Journal
JOURNAL OF MAGNESIUM AND ALLOYS
Volume 6, Issue 2, Pages 205-213Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jma.2018.05.001
Keywords
Friction stir welding; Tool pin profile; Mechanical properties; Taguchi orthogonal array; Analysis of variance (ANOVA)
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In this investigation, the effect of friction stir welding (FSW) parameters such as tool pin profiles, rotational speed and welding speed on the mechanical properties of tensile strength, hardness and impact energy of magnesium alloy AZ31 was studied. The experiments were carried out as per Taguchi parametric design concepts and an L9 orthogonal array was used to study the influence of various combinations of process parameters. Statistical optimization technique, ANOVA, was used to determine the optimum levels and to find the significance of each process parameter. The results indicate that rotational speed (RS) and transverse speed (TS) are the most significant factors, followed by tool pin profile (PF), in deciding the mechanical properties of friction stir welded magnesium alloy. In addition, mathematical models were developed to establish relationship between different process variables and mechanical properties. (C) 2018 Published by Elsevier B.V. on behalf of Chongqing University.
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